matlab求解二维泊松方程
时间: 2023-08-24 17:07:10 浏览: 206
可以使用matlab内置的PDE工具箱来求解二维泊松方程。具体步骤如下:
1. 定义模型区域和边界条件:
```matlab
model = createpde();
geometryFromEdges(model,@squareg);
applyBoundaryCondition(model,'dirichlet','Edge',1:model.Geometry.NumEdges,'u',0);
```
2. 定义偏微分方程:
```matlab
pdeCoeffs = @(region,state) [1;0;1;0;0;1];
specifyCoefficients(model,'m',0,'d',0,'c',pdeCoeffs,'a',0,'f',1);
```
3. 求解:
```matlab
generateMesh(model);
results = solvepde(model);
u = results.NodalSolution;
```
完整代码如下:
```matlab
model = createpde();
geometryFromEdges(model,@squareg);
applyBoundaryCondition(model,'dirichlet','Edge',1:model.Geometry.NumEdges,'u',0);
pdeCoeffs = @(region,state) [1;0;1;0;0;1];
specifyCoefficients(model,'m',0,'d',0,'c',pdeCoeffs,'a',0,'f',1);
generateMesh(model);
results = solvepde(model);
u = results.NodalSolution;
```
其中,模型区域为正方形,边界条件为Dirichlet边界条件,偏微分方程系数为1。
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